CN101335116B - Method for manufacturing copper coated aluminum uni-core flame-retardant refractory flexible electric cable with double sheaths - Google Patents
Method for manufacturing copper coated aluminum uni-core flame-retardant refractory flexible electric cable with double sheaths Download PDFInfo
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- CN101335116B CN101335116B CN2008101353147A CN200810135314A CN101335116B CN 101335116 B CN101335116 B CN 101335116B CN 2008101353147 A CN2008101353147 A CN 2008101353147A CN 200810135314 A CN200810135314 A CN 200810135314A CN 101335116 B CN101335116 B CN 101335116B
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Abstract
The invention discloses a copper-clad aluminum single-core flame retardant and fire resisting flexible cable with double jackets and a manufacturing method thereof. The manufacturing method comprises the steps that: a copper-clad aluminum conductor is made into a single conductive wire core; a fire resisting layer is formed at the outer side of the single conductive wire core; plastic is extruded at the outer side of the of the fire resisting layer in an extrusion molding manner so as to form an insulation layer; plastic is extruded at the outer side of the insulation layer in the extrusion molding manner so as to form a restrictive coating, wherein, the step that the copper-clad aluminum conductor is made into the single conductive wire core comprises the steps that: a wire-drawing machine is utilized to draw the copper-clad aluminum conductor into a single conductive filament; an annealer is utilized to carry out an annealing process to the single conductive filament; a wire-bunching machine is utilized to bunch a plurality of annealed single conductive filaments into braided wires; a wire twisting machine is utilized to twist a plurality of braided wires into the conductive wire core. The cable of the invention has the advantages of low copper consumption, light weight and low cost. As a single filament structure with multiple filaments and small diameter, and a multi-strand twisting technology are adopted, the cable is particularly flexible and can be bended randomly.
Description
Technical field
The present invention relates to a kind of electric wire technology, particularly copper coated aluminum uni-core flame-retardant refractory double sheath soft cable and manufacture method thereof.
Background technology
Notion for copper cover aluminum, electric wire production firm is not strange, that is exactly the aluminium that the structure that will constitute each conductive monofilament of conductor wire core is processed into outer field copper and internal layer, can save the copper that belongs to strategic resource in large quantities like this, can make the maximum function of copper performance again.For example being no lack of before in the Chinese patent literature at document has report, for example: Chinese patent Granted publication CN2881898 introduce the copper cover aluminum city communication cable, the disclosed copper cover aluminum communication cable of CN2881899, the copper clad aluminum conductor communication cable that CN200979818Y recommends, the copper clad aluminum conductor that CN101060024A is public all or the electric wire of copper covered steel conductor, the bimetallic conductor monitoring type earth cable that CN2829026Y discloses, a kind of high strength copper-coated aluminum electric wire/cable that CN2906844Y discloses, also just like CN1758384Y, CN201004349Y, CN2919466Y, CN101086906Y, CN200986831Y, CN2348466Y, CN2904222Y, CN200976298Y, CN200969249Y, CN2891231Y, CN2879357Y or the like has all related to aluminium conductor has been coated copper clad outward, and purpose all is in order to save the copper resource.
Yet, because the aluminium pulling force is little, intensity is low, or copper cladding aluminum conductor that copper consumption little little for diameter, the easily broken and difficulty of processing of its copper cover aluminum lead enlarges markedly, even can't process at all.And if dilated diameter or increase copper consumption then can make cable harden, be unfavorable for laying.
Summary of the invention
The purpose of this invention is to provide a kind of flexibility excellent and help laying, handling ease and copper coated aluminum uni-core flame-retardant refractory double sheath soft cable and manufacture method thereof safe in utilization.
According to a first aspect of the invention, the manufacture method of copper coated aluminum uni-core flame-retardant refractory double sheath soft cable provided by the invention comprises: the step of copper-clad aluminum conductor being made single conductor wire core; Form the step of flame retardant coating in the described conductor wire core outside; Extrude plastics in the described flame retardant coating outside in the extrusion molding mode, form the step of insulating barrier; And outside described insulating barrier, extrude plastics in the extrusion molding mode, form the step of restrictive coating.
Wherein, the step of formation flame retardant coating comprises: mica layer at first is wrapped in the conductor wire core outside; The glass layer that is wrapped in the mica layer outside then, thus flame retardant coating formed.
Wherein, the material of insulating barrier and restrictive coating is flame-proof polyvinyl chloride or low-smoke halogen-free polyolefin material.
Wherein, the described step that copper-clad aluminum conductor is made single conductor wire core comprises: utilize wire drawing machine that copper-clad aluminum conductor is drawn into single conductive monofilament; Utilize the annealing machine that described single conductive monofilament is carried out annealing in process; Utilize the synnema machine with several conductive monofilament Shu Hecheng strands of having annealed; Utilize stranding machine that several described strands are twisted into conductor wire core.
Wherein, the drawing angle that copper-clad aluminum conductor is drawn into single conductive monofilament is 12 °～14 °.
Wherein, the annealing temperature in the described annealing in process is controlled in 540 ± 10 ℃.
According to a second aspect of the invention, copper coated aluminum uni-core flame-retardant refractory double sheath soft cable provided by the invention comprises:
Conductor wire core;
Be wrapped in the flame retardant coating of described single conductor wire core outer surface;
Be extruded in the insulating barrier on the described flame retardant coating; And
Be extruded in the flame retardant sheath layer on the described insulating barrier; Wherein:
Conductor wire core constitutes by the multiply conductive monofilament is stranded;
Every conductive monofilament is made of the aluminium conductor copper clad outer with being coated on aluminium conductor.
Wherein, described flame retardant coating comprises and wraps up in the mica layer that wraps in the conductor wire core outside and wrap up in the glass layer that wraps in the mica layer outside.
Wherein, the diameter of described conductive monofilament is 0.2～1.2mm, and the diameter of aluminium conductor is 0.18439～1.1063mm, and the thickness of copper clad is 0.007805～0.04685mm.
Wherein, the sectional area of described conductor wire core is 1.5～500mm
2
Technique effect of the present invention is, and is few, in light weight with copper, cost is low.Because adopt the monofilament structure of many radicals, minor diameter, and strands technology, the cable particularly soft can be done any bending.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram that shows copper coated aluminum uni-core flame-retardant refractory double sheath soft cable structure of the present invention;
Fig. 2 is the schematic diagram that shows copper cover aluminum monofilament structure of the present invention.
Embodiment
The manufacture method of copper coated aluminum uni-core flame-retardant refractory double sheath soft cable of the present invention at first is described with reference to the Fig. 1 that shows the construction of cable of the present invention, and this method comprises: the step of copper-clad aluminum conductor being made single conductor wire core 1; Form the step of flame retardant coating in described conductor wire core 1 outside; Extrude plastics in the described flame retardant coating outside in the extrusion molding mode, form the step of insulating barrier 4; And extrude plastics in the extrusion molding mode in described insulating barrier 4 outsides, form the step of restrictive coating 5.
The step that forms flame retardant coating comprises: the mica layer (band) 2 that at first is wrapped in conductor wire core 1 outside, and the glass fiber tape 3 that is wrapped in mica layer (band) 2 outsides then, thus form flame retardant coating.
The material of insulating barrier 4 and restrictive coating 5 is flame-proof polyvinyl chloride or low-smoke halogen-free polyolefin material.
The step that copper-clad aluminum conductor is made single conductor wire core 1 of the present invention comprises: utilize wire drawing machine that copper-clad aluminum conductor is drawn into single conductive monofilament 11; Utilize the annealing machine that described single conductive monofilament 11 is carried out annealing in process; Utilize the synnema machine with several conductive monofilament Shu Hecheng strands of having annealed; Utilize stranding machine that several described strands are twisted into conductor wire core 1.
The present invention also can save above-mentioned step with conductive monofilament Shu Hecheng strand, the step of making single conductor wire core 1 is improved to: utilize wire drawing machine that copper-clad aluminum conductor is drawn into single conductive monofilament 11; Utilize the annealing machine that described single conductive monofilament 11 is carried out annealing in process; Utilize stranding machine that many conductive monofilaments of having annealed are twisted into conductor wire core 1 then.
It is one of characteristics of the present invention that several strands of conductive monofilaments 11 are twisted together formation conductor wire core 1, and this will make the cable particularly soft, can do any bending.
Copper-clad aluminum conductor is being drawn in the process of single conductive monofilament 11, it draws angle should elect 12 °～14 ° as, to guarantee to draw the conductive monofilament success.
Because monofilament is crystal displacement hardening after drawing, so the recovery of must annealing, the key of annealing in process is the control of annealing temperature, and the annealing temperature of fine copper is about 650 ℃, and annealing temperature of the present invention should be controlled at 540 ± 10 ℃.
In the processing procedure of Shu Hecheng strand, many conductive monofilaments of having annealed can be restrainted by certain pitch and close, and pitch is not more than 14 times of bundle back strand external diameter; Monofilament can weld but the intensity of weld is not less than 85% of initial value.
Several described strand stranded or link in the process of conductor wire core 1, described several strands can be undertaken stranded by certain pitch.
Fire-retardant principle of the present invention is: have a kind of fire retardant in the insulation of employing, the sheath material, the effect of this fire retardant mainly is when fire takes place, can play cable and outside air isolates, prolong cable by the burning time, stop the extension of flame effectively, when cable leaves naked light, cable in 5 seconds flame from putting out.
Fire-resistant principle of the present invention is: cable is provided with flame retardant coating, and the material of flame retardant coating mainly contains mica layer and fiberglass layer is formed, and this material has excellent insulation property and fire-resistant, heat-resistant quality, can keep energising operation in 90 minutes in flame.
Conductive monofilament of the present invention uses copper cover aluminum, and wherein copper content only is with 15% of the copper n-conductor cable n of diameter.Insulating barrier 4 of the present invention, restrictive coating 5 materials all are fire-retardant fiery polyolefine material or flame-proof polyvinyl chloride materials of low smoke and zero halogen (nontoxic).
Fig. 1 has shown copper coated aluminum uni-core flame-retardant refractory double sheath soft cable structure of the present invention; Fig. 2 has shown copper cover aluminum monofilament 11 structures of the present invention.
As depicted in figs. 1 and 2, copper coated aluminum uni-core flame-retardant refractory double sheath soft cable of the present invention comprises conductor wire core 1, is wrapped in the flame retardant coating of described single conductor wire core 1 outer surface; Be extruded in the insulating barrier 4 on the described flame retardant coating; And be extruded in flame retardant sheath layer 5 on the described insulating barrier 4, wherein: conductor wire core 1 constitutes by multiply conductive monofilament 11 is stranded; Every conductive monofilament 11 is made of aluminium conductor 111 and the copper clad 112 that are coated on outside the aluminium conductor 111.
Wherein, per share conductive monofilament 11 comprises that bundle lumps together the many conductive monofilaments 11 that constitute strand.
Flame retardant coating comprises to be wrapped up in the mica layer (band) 2 that wraps in conductor wire core 1 outside and wraps up in the glass layer (band) 3 that wraps in mica layer 2 outsides.
Every conductive monofilament 11 of the present invention is made of aluminium conductor 111 and the copper clad 112 that are coated on outside the aluminium conductor 111, the diameter of conductive monofilament 11 is 0.2～1.2mm, wherein: the diameter of aluminium conductor 111 is 0.18439～1.10635mm, and the thickness of copper clad 112 is 0.007805～0.04685mm, the cross section that is to say copper clad 112 accounts for 15 ± 2% of whole conductive monofilament 11, and all the other are the cross section of aluminium conductor 111.
Insulating barrier 4 of the present invention can be made of flame-proof polyvinyl chloride or low-smoke halogen-free polyolefin, and restrictive coating 5 also can be made of flame-proof polyvinyl chloride or low-smoke halogen-free polyolefin.Conductor wire core 1 of the present invention preferred but be not limited to 18 kinds of specifications shown in the following table.
The advantage of cable of the present invention is: few, in light weight with copper, cost is low. Because adopt the monofilament structure of many radicals, minor diameter, and strands technology, the cable particularly soft can be done any bending.
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention. Therefore, all modifications of doing according to the principle of the invention all should be understood to fall into protection scope of the present invention.
Claims (4)
1. the manufacture method of a copper coated aluminum uni-core flame-retardant refractory double sheath soft cable comprises:
Copper-clad aluminum conductor is made the step of single conductor wire core (1), comprising:
Utilize wire drawing machine that copper-clad aluminum conductor is drawn into single conductive monofilament (11);
Utilize the annealing machine that described single conductive monofilament (11) is carried out annealing in process;
Utilize the synnema machine with several conductive monofilament Shu Hecheng strands of having annealed; And
Utilize stranding machine that several described strands are twisted into conductor wire core (1);
Form the step of flame retardant coating in described conductor wire core (1) outside;
Extrude plastics in the described flame retardant coating outside in the extrusion molding mode, form the step of insulating barrier (4); And
Extrude plastics in described insulating barrier (4) outside in the extrusion molding mode, form the step of restrictive coating (5);
Wherein, the drawing angle that copper-clad aluminum conductor is drawn into single conductive monofilament (11) is 12 °～14 °.
2. method according to claim 1, the step that wherein forms flame retardant coating comprises:
Mica layer (2) at first is wrapped in conductor wire core (1) outside;
The glass layer (3) that is wrapped in mica layer (2) outside then, thus flame retardant coating formed.
3. method according to claim 1 and 2, wherein the material of insulating barrier (4) and restrictive coating (5) is flame-proof polyvinyl chloride or low-smoke halogen-free polyolefin material.
4. method according to claim 1, wherein, the annealing temperature in the described annealing in process is controlled at 540 ± 10 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101353147A CN101335116B (en) | 2008-07-30 | 2008-07-30 | Method for manufacturing copper coated aluminum uni-core flame-retardant refractory flexible electric cable with double sheaths |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101353147A CN101335116B (en) | 2008-07-30 | 2008-07-30 | Method for manufacturing copper coated aluminum uni-core flame-retardant refractory flexible electric cable with double sheaths |
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| CN101335116A CN101335116A (en) | 2008-12-31 |
| CN101335116B true CN101335116B (en) | 2010-06-16 |
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| CN2008101353147A Expired - Fee Related CN101335116B (en) | 2008-07-30 | 2008-07-30 | Method for manufacturing copper coated aluminum uni-core flame-retardant refractory flexible electric cable with double sheaths |
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| CN101950610B (en) * | 2010-09-16 | 2012-08-08 | 太仓市林源电线电缆有限公司 | Super-thin oxidation resisting copper braided wire and manufacturing method thereof |
| CN104200902A (en) * | 2014-09-20 | 2014-12-10 | 杭州创远电缆有限公司 | Environmental energy-saving fire-proofing cooper-aluminum alloy electric cable and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230754A (en) * | 1998-03-26 | 1999-10-06 | 彭星魁 | Compound copper-aluminium wire and its production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1230754A (en) * | 1998-03-26 | 1999-10-06 | 彭星魁 | Compound copper-aluminium wire and its production process |
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Owner name: GUANGDONG ZHONGDE CABLE CO., LTD. Free format text: FORMER OWNER: ZHONGLI SCIENCE + TECHNOLOGY GROUP CO., LTD. Effective date: 20131203 |
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Effective date of registration: 20131203 Address after: 523458 Guangdong province Dongguan Dongkeng Mailiao side head prosperous road No. 2 Patentee after: Guangdong Zhongde Cable Co., Ltd. Address before: 215542 Changshu Southeast Economic Development Zone, Jiangsu Patentee before: Zhongli Science & Technology Group Co., Ltd. |
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Granted publication date: 20100616 Termination date: 20170730 |